Data SIM & data plan Switzerland 2026 – mobile internet without calls compared
A data SIM or data-only plan is the right choice when you want to connect a second device – tablet, router, smartwatch, GPS tracker or IoT sensor – to mobile internet without signing up for a full phone contract. On internet-offer.ch you'll find every data plan available in Switzerland – independently compared, updated weekly, no ads – from CHF 4.–/month.
Looking for a home internet subscription? Quickly compare offers with the dedicated internet-offer.ch comparison tool.
What is a data plan and when do I need one?
A data plan (or data SIM) is a mobile contract that includes mobile data only – no calls, no SMS. It's the opposite of a standard mobile phone plan and is designed for devices that don't need phone functionality.
Data plan ≠ Multi-SIM – an important distinction
A data plan is a standalone contract for a second device with its own SIM card and its own data allowance. A Multi-SIM is an additional SIM attached to an existing phone plan, sharing the main plan's data volume. If you don't have a phone plan or want a fully separate data allowance, you need a data plan – not a Multi-SIM.
Best data SIM plans Switzerland 2026 compared
All data-only plans sorted by price. No calls included:
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Digital Republic Flat 0.4: 4.00 CHF per month, unlimited data at a maximum speed of 0.4 Mbit/s. No contract required, and activation is free.
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Sunrise We Connect Track: 4.00 CHF per month, unlimited data in Switzerland, 100 MB in roaming, and a maximum speed of 0.5 Mbit/s. Activation is free, and there are no contractual obligations.
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SAK mobile internet S: 9.00 CHF per month, unlimited data at a maximum speed of 1 Gbit/s. Requires a 12-month contract and an activation fee of CHF 40.
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Mucho DATAMINI: 9.90 CHF/month. 2 GB with 5G included on the Swisscom network at 50 Mbit/s. Free activation and no strings attached.
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swype Surf: 14.95 CHF per month, unlimited 5G data with a maximum speed of 2 Gbit/s. Activation is free, and there are no contractual obligations.
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salt Surf Unlimited: 24.95 CHF per month, unlimited 5G data with a maximum speed of 1.7 Gbit/s + 5 GB in Europe. Activation is free, and there are 24-month contractual obligations.
The TOP 3 data-only SIM cards in Switzerland
Tip: for an unlimited data plan without calls, Digital Republic Flat 10 (CHF 1, unlimited @ 10 Mbit/s) offers the best price-performance ratio. For high-speed 5G: swype Surf or Salt Unlimited Surf.
If you want to explore all available Swiss data subscriptions on our website, jump straight to the comparison, choose the offer that suits you best, and activate it right away.
Who needs a data SIM in Switzerland? Comparison by use case
Data subscriptions differ from traditional phone plans as they don't include voice calls and can't be used for calling. However, these data-only plans are becoming increasingly popular for various needs. Below, you'll find the uses you can make of a Swiss data subscription.
📱 Data SIM for tablet or iPad
From CHF 9.90/month – flexible, no contract
With a data SIM in your tablet you stay online anywhere without WiFi – on trains, travelling, at work. For occasional use, 2–10 GB/month is enough. For streaming or daily work, we recommend an unlimited data plan. Check whether your tablet supports a physical SIM or eSIM.
🔌 Data SIM for hotspot router (5G home internet)
From CHF 14.95/month – alternative to fixed broadband
A data SIM in a 5G mobile router replaces your home broadband – no cables, no engineer needed. Switzerland's 5G network delivers speeds of 500 Mbit/s to 2 Gbit/s at many locations. Suitable as a temporary or permanent solution – check the operator's fair use policy if using as a primary connection.
📡 Data SIM for IoT, GPS trackers and alarm systems
From CHF 4.–/month – minimal consumption
Trackers and IoT sensors need very little data (often under 100 MB/month) and don't require high speed. Reliable network coverage is the key factor. Cheapest options: Digital Republic Flat 0.4 (CHF 4.–, unlimited @ 0.4 Mbit/s) and Sunrise We Connect Track (CHF 4.–, 100 MB roaming included).
⌚ Data SIM for smartwatch and wearables
From CHF 7.50/month – eSIM option available
Smartwatches (Apple Watch, Samsung Galaxy Watch) need their own data plan to stay connected without a paired smartphone. Most wearables only support eSIM – no physical SIM slot. Sunrise We Connect Watch (CHF 7.50) is the most-recommended option. Check eSIM compatibility and Sunrise network support for your specific device.
💻 Data SIM for laptop (USB stick or built-in eSIM)
From CHF 9.90/month – monthly cancellable
Newer laptops (Surface, MacBook Pro M3+) have a built-in eSIM. Older devices use a USB data stick. For occasional use (email, browsing) 5–10 GB/month is sufficient. For video calls and cloud work, an unlimited data plan is recommended.
Data plan or prepaid data SIM – which is cheaper?
For regular users (online on mobile more than 3 times a week), a monthly plan is almost always cheaper than prepaid data packages. The cost per GB is significantly lower with plans.
Below are some usage profiles for mobile data along with our recommendations:
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< 1 GB / month
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Recommendation: Prepaid data package
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Reasoning: No fixed plan required; only pay for what you actually use.
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1–10 GB / month
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Recommendation: Data plan from CHF 9.90
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Reasoning: Offers a significantly better price-per-GB ratio than prepaid packages.
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> 10 GB / month
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Recommendation: Unlimited data plan
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Reasoning: Available from as low as CHF 13/month; prepaid options would be disproportionately expensive for this level of usage.
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Irregular (Travel)
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Recommendation: Prepaid + Roaming option
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Reasoning: Maximum flexibility with no fixed monthly costs when not in use.
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For flexible use without a fixed monthly fee: Prepaid SIM in Switzerland with bookable data packages.
How to Choose a Mobile Data-Only Internet Plan
With internet-offer.ch, you can easily find the best free data-only internet plan in just a few clicks:
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Discover the Offers
Read our advice and then identify the best data plan for Switzerland, thanks to the comparison section prepared by our team of experts. To find the right plan, you'll need to consider not only the price but also other package features to determine if it suits your needs.
Among the information to analyze, make sure to consider the supporting network that ensures coverage, contractual constraints, activation costs, and the maximum guaranteed internet connection speed.
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Choose the Plan and Sign the Contract
Once you've identified the right plan for your needs and budget, you can proceed to the activation phase. In this case, there's no point in porting your phone number since you won't be able to make calls. However, we recommend checking with your current provider for the cancellation process if you're switching from another data plan. If you're activating a new data-only SIM, you can proceed without further checks.
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Activate the New Subscription
After processing your request, the new provider will inform you of the exact date of the tariff change and send the new SIM card in advance (in the case of a physical card). The SIM card comes with a new PIN, which you can change in the settings after inserting the card into your smartphone for the first time. It's essential to complete this step, even if the SIM is intended for a mobile Wi-Fi device, to avoid unexpected network issues. Once you receive confirmation of the contract activation, you can start using your new data plan and browse anywhere you go.
How to Use the Offer Comparison on internet-offer.ch
Online comparison of data-only offers through internet-offer.ch allows you to quickly identify the best plans to activate. The comparison is available entirely for free.
In many cases, data-only offers on internet-offer.ch are exclusively available through online activation. These solutions typically offer more favorable economic conditions than plans activated in physical stores or through other channels, reducing initial costs and proposing other welcome bonuses or exclusive discounts.
The comparison includes products from providers that collaborate directly or indirectly with the internet-offer.ch platform. The offers included in the comparison are categorized based on certain features of the offer and are ordered by increasing price, displaying the most cost-effective offers at the top. If some offers are sponsored by providers or third parties, they are clearly marked as "Premium."
Click here for more information and to learn more about how the internet-offer.ch comparison works.
We Compare, You Choose, You Save
Trasparent: We show you the best offers without pushing you to choose one company over another. Additionally, internet-offer.ch does not sell any data to third parties, and we won't bother you with commercial phone calls to suggest other products.
Fast: With internet-offer.ch, you can quickly compare products from major national telecommunications companies and receive support for all your needs
Free: We don't charge any commissions to customers, and the offers we present are equal to or better than those obtainable by requesting a quote from partner company websites.
FAQ: data SIM plans in Switzerland
What is the difference between a data plan and a regular mobile plan?
A standard mobile plan includes calls, SMS and data – everything for a smartphone. A data plan contains data only, no calls. It's cheaper and ideal for secondary devices like tablets, routers or IoT sensors.
What is the difference between a data SIM and a Multi-SIM?
A data plan is a standalone contract with its own data volume. A Multi-SIM is an additional SIM attached to an existing plan that shares the main plan's data. Multi-SIM is cheaper if you already have a phone plan; a data plan is better for fully independent connections.
Can I use a data plan as a replacement for my home internet?
Yes, in many cases. With a 5G data plan and a WiFi router you can get speeds comparable to cable internet. Check the operator's fair use policy if using it as your primary connection. You may also want to compare home internet plans
What happens if I run out of data before the end of the month?
If your data plan runs out of data before the end of the month, you usually have two options. You can purchase additional data packages to extend your internet connection, but this may incur additional costs. Alternatively, you may experience reduced connection speed (throttling) until the end of the billing cycle, which means your connection may become significantly slower.
Can I activate a data SIM with eSIM?
Yes. Most modern data plans – including Digital Republic, Sunrise We Connect and Salt – offer eSIM activation. Particularly important for smartwatches and tablets without a physical SIM slot. Activation is done via QR code, usually within minutes.
What are you waiting for? Find the best data plan that suits your needs!
In-Depth Insights into Mobile Data Plans
Read our in-depth articles on the most searched topics in the mobile telecommunications industry:
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Internet Speed Test: Perform a speed test now to check your connection speed.
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Mobile Network Coverage Map: Verify your connection at your address by viewing mobile network coverage maps for Swisscom, Sunrise, and Salt.
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Mobile Telephony Glossary: Discover the meanings of the most commonly used terms and acronyms in the telecommunications sector.
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Mobile Telephony Guides: Stay informed with guides written by the internet-offer.ch team on the main topics in the industry.
*Amount related to the cheapest data-only offer proposed by one of our Partners as of 27-03-2026. Offer is subject to territorial limits and actual verification of coverage. The internet-offer.ch comparison service is carried out on the basis of the monthly fee amount only. For additional economic conditions applied by each Partner, please refer to their respective contractual disclosures. For more info click on the button of the specific mobile internet subscription and check the conditions applied by the individual mobile internet operator.